Building material



June 24, 1930. H 1 BUR-rs JR 1,767,168

BUILDING MATERIAL Filled March 9, 1929 fw f #mi f HM E M,

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IN VEN TOR.

A TTORNEY.

sound, and to i Patented .lune 24, 1930 nitrate HENRY J. BURT, JR., 0F' WHEATON, ILLINOIS BUILDING MATERIAL Application led March 9, A929. Serial No. 345,849.

This invention relates to buildin material designed and adapted for filling the wall spaces of frame buildings to provide insulation against thermal changes and prevent the spread of combustion. i

The object of the present invention is to provide simple and inexpensive means for securing such insulating filling material-c 10 preferably in the form of unit packages-in the spaces of buildings, which usually are left open at one side, as the spaces between the joists of porches and also, sometimes, between roof joists.

`Wl1at I now considera preferable form of insulating material for the particular purpose specified is that which forms the subject matter of an application for U. S. Let' ters Patent filed by me on or about November 5, '1928, and numbered serially 317,293. I do not, however, desireI to limit myself to this or any particular kind or form vof insulatingfilling material, and said insulating filling material of my said prior application may, therefore, exemplify any desired or approved form of insulating filling material. f To effect the object of the invention as it relates to means for securing the insulating vfilling material in the open-sided spaces to be filled, said means comprises what may be called a follower plate made of ysuitable sheet metal, preferably galvanized sheet steel, said plates being shorter than the width of the spaces to be filled and slightly narrower than the insulating units with which they are decomprising springs applied to the outer sides of said plates, the ends of which project at both ends of said follower so that the overall length of the springs applied to each y plate will be somewhat greater than the width ofthe spaces to be filled, whereby, when inserted cross-wise of said spaces, a bow or bend will be imparted to said springs, which will cause the ends thereof to grip the joists which define the spaces to be filled.

My invention also comprises the various other features and details of construction hereinafter described and claimed.

signed for use; said securing means also -shown in Figure 1, and which I now'con- Sider embodies the invention in its preferable form;

Figure 3 is a bottom plan view thereof;

Figure 4 isla view similar to Figure 2, illustrating a follower plate and securing spring embodying my Invention and improvements in slightly modified form;

Figure 5 is a bottom plan view thereof; y

Figure 6 is a bottom plan View substantially similar to Figure 5, showing a further slight modification of the invention; and

Figure 7 is an isometric view of a unit package of insulating filling material such as is shown in Fig. 1.

Describing the invention with particular reference to the drawings and referring in the first instance to Figures 1 to 3 and 7, A, Fig; 1, designates, as a whole a portion of what we,v may assume is the floor of an e11- closed porch, consisting of joists a which support the fioor and which define spaces a2 at the under side of the porch` floor, the bottom sides of which are open.

Contained in the spaces a2 are unit packages B of `insulating material, what I now consider to be a preferable form of package being that which forms the subject-matter of my said prior application, Serial Number 317,293, to which reference is here made for a description of said insulating package in detail. I desire it understood, however, that of the joists.

which are slightly shorter than the width of the spaces a2 and the width of which is preferably somewhat less than that of the insulating unit B, though this dimension ad mits of considerable variation. In use, an insulating unit B having been inserted into a space a?, a follower plate 1 is placed against the exposed side thereof and pressed 4inwardly with sufficient force to subject said insulating unit to a pressure to cause it to conform to and fill the cross-section of said space which it occupies. Said follower plate and insulating unit B are adapted to be secured in position by means of a spring 2 applied to said follower plate, the ends of which project beyond the ends of said fiillower plate and are adapted to grip the sides Said springs 2 are preferably leaf springs and for economy are made separate from the follower plates 1 and are secured thereto by rivets or other suitable means. l

Also, said springs are of such over-all length that they will be fiexed or bowed when the are inserted into the spaces a2, thus causing their ends to react against the joists a. As shown, also, the ends of said springs are chisel-shaped, as shown at 3,

vwhich will cause them to grip the joists a with force corresponding to the pressure due to compression of the insulating units.

In making an installation, insulating units B will be inserted into the spaces so that they will contact with each other until all such spaces have been filled.

Instead of making the springs 2 as separate parts, as shown in Figs. 1 to 8, and heretofore described, my invention contemplates making the follower plates and springs integral with each other. This can be effected lin a simple manner by first stamping, from suitable resilient sheet metal, blanks shaped and proportioned to form both said follower plates and springs and then slitting said blanks on proper linesV to form the springs.

This modification is shown in Figs. 4 to 6, Figs.l 5 and 6 being substantially identical with each other except that, as shown in Fig. 5, only a single spring is applied to the follower plate, whereas in Fig. 6 two springs are applied to the follower plate.

Describing the modification shown in Fi s.

.4 and 5, 1 is the follower plate and 2 te springs, while in the modification-i shown in Fig. 6, 12 is the follower plate and 2"1 the duplicate springs applied thereto.

I claim:

1. An insulating unit for the purpose speciied and means for securing it within an open-sided space consistin of a follower plate adapted to be inserte outside of said insulating unit and providing means for subjecting the same to pressure,

and a spring applied to the outer side of into saidspace iframes said follower plate, said spring being longer than the width of said space and in use being inserted crosswise thereof, whereby, when said spring is applied to said follower plate, it will be exed and when released its ends will grip the side walls of said space.

2. An insulating unit and securing means therefor as specified in claim 1, in which the my invention, I affix my signature this 5th day of March, 1929.

HENRY yJ. BURT, J R. 

